Wix stores new order

Hi,
I’m currently using Wix restaurants but I want to switch to Wix stores.
The problem is that I need the users to specify the delivery date…
I found this article https://www.wix.com/velo/example/delivery-time , but here the user chooses delivery date only at the checkout, and I need the user to specify the date at the beginning of the order, so I’ll be able to hide and show products depending on the delivery date (some products I have only on Fridays, etc.).
Maybe someone knows if there is a function in the Wix API that can help me show the date selection when a user begins new order?
Thanks in advance.